A weird update:
It is now iterating through each item in starter content and attempting to show updates, locking it, then attempting to get its status, then showing it is locked by me:
[2022.12.28-03.42.29:470][ 0]LogSourceControl: Attempting "svn status --show-updates --verbose --xml "E:/Projects/project/trunk/project_5_1/Content/StarterContent/Props/MaterialSphere.uasset" --non-interactive --trust-server-cert --username USERNAME --password ********"
[2022.12.28-03.42.29:919][ 0]LogSourceControl: Attempting "svn lock "E:/Projects/project/trunk/project_5_1/Content/StarterContent/Props/MaterialSphere.uasset" --non-interactive --trust-server-cert --username USERNAME --password ********"
[2022.12.28-03.42.30:221][ 0]LogSourceControl: Attempting "svn status --show-updates --verbose --xml "E:/Projects/project/trunk/project_5_1/Content/StarterContent/Props/MaterialSphere.uasset" --non-interactive --trust-server-cert --username USERNAME --password ********"
[2022.12.28-03.42.30:759][ 0]SourceControl: 'MaterialSphere.uasset' locked by user 'USERNAME'.
[2022.12.28-03.42.30:803][ 0]LogSourceControl: Attempting "svn status --show-updates --verbose --xml "E:/Projects/project/trunk/project_5_1/Content/StarterContent/Architecture/Floor_400x400.uasset" --non-interactive --trust-server-cert --username USERNAME --password ********"
[2022.12.28-03.42.31:303][ 0]LogSourceControl: Attempting "svn status --show-updates --verbose --xml "E:/Projects/project/trunk/project_5_1/Content/StarterContent/Props/SM_Bush.uasset" --non-interactive --trust-server-cert --username USERNAME --password ********"
[2022.12.28-03.42.31:835][ 0]LogSourceControl: Attempting "svn lock "E:/Projects/project/trunk/project_5_1/Content/StarterContent/Props/SM_Bush.uasset" --non-interactive --trust-server-cert --username USERNAME --password ********"
[2022.12.28-03.42.32:190][ 0]LogSourceControl: Attempting "svn status --show-updates --verbose --xml "E:/Projects/project/trunk/project_5_1/Content/StarterContent/Props/SM_Bush.uasset" --non-interactive --trust-server-cert --username USERNAME --password ********"
[2022.12.28-03.42.32:692][ 0]SourceControl: 'SM_Bush.uasset' locked by user 'USERNAME'.
[2022.12.28-03.42.32:729][ 0]LogSourceControl: Attempting "svn status --show-updates --verbose --xml "E:/Projects/project/trunk/project_5_1/Content/StarterContent/Particles/P_Ambient_Dust.uasset" --non-interactive --trust-server-cert --username USERNAME --password ********"
[2022.12.28-03.42.33:227][ 0]LogSourceControl: Attempting "svn lock "E:/Projects/project/trunk/project_5_1/Content/StarterContent/Particles/P_Ambient_Dust.uasset" --non-interactive --trust-server-cert --username USERNAME --password ********"
[2022.12.28-03.42.33:530][ 0]LogSourceControl: Attempting "svn status --show-updates --verbose --xml "E:/Projects/project/trunk/project_5_1/Content/StarterContent/Particles/P_Ambient_Dust.uasset" --non-interactive --trust-server-cert --username USERNAME --password ********"
[2022.12.28-03.42.33:913][ 0]SourceControl: 'P_Ambient_Dust.uasset' locked by user 'USERNAME'.
I am the user, and it’s saying I have it locked.