$ git clone -n https://src.fedoraproject.org/rpms/libE57Format.git /var/lib/mock/f45-build-15735-478/root/chroot_tmpdir/scmroot/libE57Format
Cloning into '/var/lib/mock/f45-build-15735-478/root/chroot_tmpdir/scmroot/libE57Format'...
$ git fetch origin a21a7ae5e0deff4a399d1d021f9dcfd0c9d5a3e6:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/libE57Format
 * [new ref]         a21a7ae5e0deff4a399d1d021f9dcfd0c9d5a3e6 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a21a7ae Update to 3.4.0