$ git clone -n https://src.fedoraproject.org/rpms/osmo.git /var/lib/mock/f40-build-2265649-54616/root/chroot_tmpdir/scmroot/osmo
Cloning into '/var/lib/mock/f40-build-2265649-54616/root/chroot_tmpdir/scmroot/osmo'...
$ git fetch origin 1f2e7deea147dc616a018c0b6e86bc1c8a5fccfe:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/osmo
 * [new ref]         1f2e7deea147dc616a018c0b6e86bc1c8a5fccfe -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1f2e7de Use webkit2gtk-4.1