$ git clone -n https://src.fedoraproject.org/rpms/crash.git /var/lib/mock/f41-build-1046899-19101/root/chroot_tmpdir/scmroot/crash
Cloning into '/var/lib/mock/f41-build-1046899-19101/root/chroot_tmpdir/scmroot/crash'...
$ git fetch origin 99cded66e425b984200204396926bb945cacea39:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/crash
 * [new ref]         99cded66e425b984200204396926bb945cacea39 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 99cded6 Update to the latest commit <196c4b79c13d>