$ git clone -n https://src.fedoraproject.org/rpms/golang-github-src-d-gcfg.git /var/lib/mock/f41-build-1112647-20168/root/chroot_tmpdir/scmroot/golang-github-src-d-gcfg
Cloning into '/var/lib/mock/f41-build-1112647-20168/root/chroot_tmpdir/scmroot/golang-github-src-d-gcfg'...
$ git fetch origin 1710fa0d78e4532508bb83ca9f24c4b3c025c734:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-src-d-gcfg
 * [new ref]         1710fa0d78e4532508bb83ca9f24c4b3c025c734 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1710fa0 Remove dead.package