$ git clone -n https://src.fedoraproject.org/rpms/libass.git /var/lib/mock/f40-build-2006794-45199/root/chroot_tmpdir/scmroot/libass
Cloning into '/var/lib/mock/f40-build-2006794-45199/root/chroot_tmpdir/scmroot/libass'...
$ git fetch origin 54e5ea7cb50dd326a6be34d8a638f17c5fd47eaf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libass
 * [new ref]         54e5ea7cb50dd326a6be34d8a638f17c5fd47eaf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 54e5ea7 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild