$ git clone -n https://src.fedoraproject.org/rpms/libgravatar.git /var/lib/mock/f42-build-864144-172187/root/chroot_tmpdir/scmroot/libgravatar
Cloning into '/var/lib/mock/f42-build-864144-172187/root/chroot_tmpdir/scmroot/libgravatar'...
$ git fetch origin 9afcb2192984c7a480127834eccd5172de5034b0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libgravatar
 * [new ref]         9afcb2192984c7a480127834eccd5172de5034b0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9afcb21 24.12.0