$ git clone -n https://src.fedoraproject.org/rpms/mutt.git /var/lib/mock/f41-build-772613-13506/root/chroot_tmpdir/scmroot/mutt
Cloning into '/var/lib/mock/f41-build-772613-13506/root/chroot_tmpdir/scmroot/mutt'...
$ git fetch origin 35bad359ec417ad7d2ae7607c4a08c90afa06dbe:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/mutt
 * [new ref]         35bad359ec417ad7d2ae7607c4a08c90afa06dbe -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 35bad35 Eliminate use of obsolete %patchN syntax (#2283636)