$ git clone -n https://src.fedoraproject.org/rpms/shadow-utils.git /var/lib/mock/f42-build-867493-175514/root/chroot_tmpdir/scmroot/shadow-utils
Cloning into '/var/lib/mock/f42-build-867493-175514/root/chroot_tmpdir/scmroot/shadow-utils'...
$ git fetch origin edb8f1a314e7da724556c551687f6b190d92e6e0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/shadow-utils
 * [new ref]         edb8f1a314e7da724556c551687f6b190d92e6e0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at edb8f1a Rebuilt for the bin-sbin merge (2nd attempt)