$ git clone -n https://src.fedoraproject.org/rpms/perl-Test-Routine.git /var/lib/mock/f39-build-1726901-41240/root/chroot_tmpdir/scmroot/perl-Test-Routine
Cloning into '/var/lib/mock/f39-build-1726901-41240/root/chroot_tmpdir/scmroot/perl-Test-Routine'...
$ git fetch origin 75371e07351a10948ae195181035d6a853e5c518:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Test-Routine
 * [new ref]         75371e07351a10948ae195181035d6a853e5c518 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 75371e0 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild