$ git clone -n https://src.fedoraproject.org/rpms/libell.git /var/lib/mock/f45-build-16138-483/root/chroot_tmpdir/scmroot/libell
Cloning into '/var/lib/mock/f45-build-16138-483/root/chroot_tmpdir/scmroot/libell'...
$ git fetch origin 4eef73d6390c72617d779cceb4d20063cbbe6dcc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libell
 * [new ref]         4eef73d6390c72617d779cceb4d20063cbbe6dcc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4eef73d Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild