$ git clone -n https://src.fedoraproject.org/rpms/wmfrog.git /var/lib/mock/f41-build-726049-13125/root/chroot_tmpdir/scmroot/wmfrog
Cloning into '/var/lib/mock/f41-build-726049-13125/root/chroot_tmpdir/scmroot/wmfrog'...
$ git fetch origin 1006da1dcc744cb3e3f346ba2e719d41291fcaed:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/wmfrog
 * [new ref]         1006da1dcc744cb3e3f346ba2e719d41291fcaed -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1006da1 Eliminate use of obsolete %patchN syntax (#2283636)