$ git clone -n https://src.fedoraproject.org/rpms/perl-Test-Object.git /var/lib/mock/f40-build-2675086-67798/root/chroot_tmpdir/scmroot/perl-Test-Object
Cloning into '/var/lib/mock/f40-build-2675086-67798/root/chroot_tmpdir/scmroot/perl-Test-Object'...
$ git fetch origin 6aa4d2a4089152255d069dca20690f947f01d165:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Test-Object
 * [new ref]         6aa4d2a4089152255d069dca20690f947f01d165 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 6aa4d2a Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild