$ git clone -n https://src.fedoraproject.org/rpms/krecipes.git /var/lib/mock/f41-build-1144788-21156/root/chroot_tmpdir/scmroot/krecipes
Cloning into '/var/lib/mock/f41-build-1144788-21156/root/chroot_tmpdir/scmroot/krecipes'...
$ git fetch origin b2582306178bb4dac3338eb9ad6f8f20e05dc061:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/krecipes
 * [new ref]         b2582306178bb4dac3338eb9ad6f8f20e05dc061 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b258230 Eliminate use of obsolete %patchN syntax (#2283636)