$ git clone -n https://src.fedoraproject.org/rpms/bontmia.git /var/lib/mock/f41-build-1034366-18630/root/chroot_tmpdir/scmroot/bontmia
Cloning into '/var/lib/mock/f41-build-1034366-18630/root/chroot_tmpdir/scmroot/bontmia'...
$ git fetch origin c30abd50e5bc12f91415cff5eee9b0d2e5a11660:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/bontmia
 * [new ref]         c30abd50e5bc12f91415cff5eee9b0d2e5a11660 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c30abd5 Eliminate use of obsolete %patchN syntax (#2283636)