$ git clone -n https://src.fedoraproject.org/rpms/gvfs.git /var/lib/mock/f41-build-side-1-3050132-37963/root/chroot_tmpdir/scmroot/gvfs
Cloning into '/var/lib/mock/f41-build-side-1-3050132-37963/root/chroot_tmpdir/scmroot/gvfs'...
$ git fetch origin b34aba232c3ee93f78a499c04cda0fe4d3faa77f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/gvfs
 * [new ref]         b34aba232c3ee93f78a499c04cda0fe4d3faa77f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b34aba2 Update to 1.56.1