$ git clone -n https://src.fedoraproject.org/rpms/crash.git /var/lib/mock/eln-build-side-114743-60968854-6587113/root/chroot_tmpdir/scmroot/crash
Cloning into '/var/lib/mock/eln-build-side-114743-60968854-6587113/root/chroot_tmpdir/scmroot/crash'...
$ git fetch origin 14160d39030a4fa87b1bdcd48b74daa1e1bb3c48:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/crash
 * [new ref]         14160d39030a4fa87b1bdcd48b74daa1e1bb3c48 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 14160d3 Sync to upstream commit 7e8a2796580d