$ git clone -n https://src.fedoraproject.org/rpms/keysmith.git /var/lib/mock/f45-build-14745-463/root/chroot_tmpdir/scmroot/keysmith
Cloning into '/var/lib/mock/f45-build-14745-463/root/chroot_tmpdir/scmroot/keysmith'...
$ git fetch origin 1819a021c0a0b3cbe0876c0201d527d57f0b67de:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/keysmith
 * [new ref]         1819a021c0a0b3cbe0876c0201d527d57f0b67de -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1819a02 26.08.1