$ git clone -n https://src.fedoraproject.org/rpms/maven-archiver.git /var/lib/mock/f41-build-1702150-24562/root/chroot_tmpdir/scmroot/maven-archiver
Cloning into '/var/lib/mock/f41-build-1702150-24562/root/chroot_tmpdir/scmroot/maven-archiver'...
$ git fetch origin d4b518abad6ba163e3121f04f28c99f483ac94ff:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/maven-archiver
 * [new ref]         d4b518abad6ba163e3121f04f28c99f483ac94ff -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at d4b518a Install license files in licensedir instead of docdir