$ git clone -n https://src.fedoraproject.org/rpms/krazy2.git /var/lib/mock/f41-build-1185400-22044/root/chroot_tmpdir/scmroot/krazy2
Cloning into '/var/lib/mock/f41-build-1185400-22044/root/chroot_tmpdir/scmroot/krazy2'...
$ git fetch origin bcbd118a7a230e80db19921cae74e433978d6217:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/krazy2
 * [new ref]         bcbd118a7a230e80db19921cae74e433978d6217 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bcbd118 Eliminate use of obsolete %patchN syntax (#2283636)