$ git clone -n https://src.fedoraproject.org/rpms/sheepdog.git /var/lib/mock/f41-build-1049392-19179/root/chroot_tmpdir/scmroot/sheepdog
Cloning into '/var/lib/mock/f41-build-1049392-19179/root/chroot_tmpdir/scmroot/sheepdog'...
$ git fetch origin a7d70631209edefb35f0d2ea683f92601b4bf618:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/sheepdog
 * [new ref]         a7d70631209edefb35f0d2ea683f92601b4bf618 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a7d7063 Eliminate use of obsolete %patchN syntax (#2283636)