$ git clone -n https://src.fedoraproject.org/rpms/golang-github-pierrre-geohash.git /var/lib/mock/f40-build-781941-131932/root/chroot_tmpdir/scmroot/golang-github-pierrre-geohash
Cloning into '/var/lib/mock/f40-build-781941-131932/root/chroot_tmpdir/scmroot/golang-github-pierrre-geohash'...
$ git fetch origin 1bd6d3a9ee9ff6911b6b332d01cd6421914d18ac:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-pierrre-geohash
 * [new ref]         1bd6d3a9ee9ff6911b6b332d01cd6421914d18ac -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1bd6d3a Update to 1.1.1 - Closes rhbz#2263722