$ git clone -n https://src.fedoraproject.org/rpms/doxygen.git /var/lib/mock/f41-build-side-1-3049451-37888/root/chroot_tmpdir/scmroot/doxygen
Cloning into '/var/lib/mock/f41-build-side-1-3049451-37888/root/chroot_tmpdir/scmroot/doxygen'...
$ git fetch origin bbac1e173a0dc761a9beba51f31637b8dac75d06:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/doxygen
 * [new ref]         bbac1e173a0dc761a9beba51f31637b8dac75d06 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bbac1e1 Fix rhbz#x2322116, broken markdown links to anchor