$ git clone -n https://src.fedoraproject.org/rpms/aurorae.git /var/lib/mock/f41-build-side-115201-61076508-6588647/root/chroot_tmpdir/scmroot/aurorae
Cloning into '/var/lib/mock/f41-build-side-115201-61076508-6588647/root/chroot_tmpdir/scmroot/aurorae'...
$ git fetch origin abef1dac71276463260cbe0b9ca54c48fbeb450c:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/aurorae
 * [new ref]         abef1dac71276463260cbe0b9ca54c48fbeb450c -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at abef1da 6.4.3