$ git clone -n https://src.fedoraproject.org/rpms/python-boututils.git /var/lib/mock/f40-build-2224759-52791/root/chroot_tmpdir/scmroot/python-boututils
Cloning into '/var/lib/mock/f40-build-2224759-52791/root/chroot_tmpdir/scmroot/python-boututils'...
$ git fetch origin 8eb25bd6266ddb26e519d16714a584c7b2f78563:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/python-boututils
 * [new ref]         8eb25bd6266ddb26e519d16714a584c7b2f78563 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8eb25bd Update to 0.2.1