$ git clone -n https://src.fedoraproject.org/rpms/dSFMT.git /var/lib/mock/f41-build-1034590-18640/root/chroot_tmpdir/scmroot/dSFMT
Cloning into '/var/lib/mock/f41-build-1034590-18640/root/chroot_tmpdir/scmroot/dSFMT'...
$ git fetch origin a50f40536d8c2f315dcc0853d4c44d87ba08d195:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/dSFMT
 * [new ref]         a50f40536d8c2f315dcc0853d4c44d87ba08d195 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a50f405 Eliminate use of obsolete %patchN syntax (#2283636)