$ git clone -n https://src.fedoraproject.org/rpms/golang-github-google-uuid.git /var/lib/mock/f40-build-2198748-51704/root/chroot_tmpdir/scmroot/golang-github-google-uuid
Cloning into '/var/lib/mock/f40-build-2198748-51704/root/chroot_tmpdir/scmroot/golang-github-google-uuid'...
$ git fetch origin 3ca9ba53240192b7f7f02d3bc556d4de031173ef:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-google-uuid
 * [new ref]         3ca9ba53240192b7f7f02d3bc556d4de031173ef -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 3ca9ba5 Update to 1.5.0 - Closes rhbz#2233305