$ git clone -n https://src.fedoraproject.org/rpms/rumor.git /var/lib/mock/f41-build-1197223-22336/root/chroot_tmpdir/scmroot/rumor
Cloning into '/var/lib/mock/f41-build-1197223-22336/root/chroot_tmpdir/scmroot/rumor'...
$ git fetch origin 22560cd4489ce4205e9f5e9a0f8ea7e133a2d2d5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rumor
 * [new ref]         22560cd4489ce4205e9f5e9a0f8ea7e133a2d2d5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 22560cd Eliminate use of obsolete %patchN syntax (#2283636)