$ git clone -n https://src.fedoraproject.org/rpms/perl-Test-Class.git /var/lib/mock/f39-build-1439538-32263/root/chroot_tmpdir/scmroot/perl-Test-Class
Cloning into '/var/lib/mock/f39-build-1439538-32263/root/chroot_tmpdir/scmroot/perl-Test-Class'...
$ git fetch origin d58c5c5f2f4e1a624456b48e84080ad91c56bc67:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Test-Class
 * [new ref]         d58c5c5f2f4e1a624456b48e84080ad91c56bc67 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d58c5c5 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild