$ git clone -n https://src.fedoraproject.org/rpms/elfutils.git /var/lib/mock/f41-build-861291-169594/root/chroot_tmpdir/scmroot/elfutils
Cloning into '/var/lib/mock/f41-build-861291-169594/root/chroot_tmpdir/scmroot/elfutils'...
$ git fetch origin 861e4d63d5203347beaf3e1b43e76619fa115ae2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/elfutils
 * [new ref]         861e4d63d5203347beaf3e1b43e76619fa115ae2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 861e4d6 0.192-6