$ git clone -n https://src.fedoraproject.org/rpms/enca.git /var/lib/mock/f45-build-8154-377/root/chroot_tmpdir/scmroot/enca
Cloning into '/var/lib/mock/f45-build-8154-377/root/chroot_tmpdir/scmroot/enca'...
$ git fetch origin 5d5c38b3ee706320a5115ece12103c6d90f306eb:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/enca
 * [new ref]         5d5c38b3ee706320a5115ece12103c6d90f306eb -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5d5c38b Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild