$ git clone -n https://src.fedoraproject.org/rpms/perl-Alien-FFI.git /var/lib/mock/f39-build-1853160-42372/root/chroot_tmpdir/scmroot/perl-Alien-FFI
Cloning into '/var/lib/mock/f39-build-1853160-42372/root/chroot_tmpdir/scmroot/perl-Alien-FFI'...
$ git fetch origin b0c3f650cafc939539390f652c62a84d50d60ac7:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/perl-Alien-FFI
 * [new ref]         b0c3f650cafc939539390f652c62a84d50d60ac7 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b0c3f65 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild