$ git clone -n https://src.fedoraproject.org/rpms/guestfs-tools.git /var/lib/mock/f41-build-847153-163768/root/chroot_tmpdir/scmroot/guestfs-tools
Cloning into '/var/lib/mock/f41-build-847153-163768/root/chroot_tmpdir/scmroot/guestfs-tools'...
$ git fetch origin 45daa6614b29d5853a2d3e3d1e17a608e1281353:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/guestfs-tools
 * [new ref]         45daa6614b29d5853a2d3e3d1e17a608e1281353 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 45daa66 New upstream development version 1.53.3