$ git clone -n https://src.fedoraproject.org/rpms/go2rpm.git /var/lib/mock/f39-build-1576338-37942/root/chroot_tmpdir/scmroot/go2rpm
Cloning into '/var/lib/mock/f39-build-1576338-37942/root/chroot_tmpdir/scmroot/go2rpm'...
$ git fetch origin 0cca17663feb7e218c4cda2999b606965232edce:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/go2rpm
 * [new ref]         0cca17663feb7e218c4cda2999b606965232edce -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 0cca176 Update to 1.10.0