$ git clone -n https://src.fedoraproject.org/rpms/golang-github-seancfoley-bintree.git /var/lib/mock/f38-build-side-42-init-devel-761933-27707/root/chroot_tmpdir/scmroot/golang-github-seancfoley-bintree
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-761933-27707/root/chroot_tmpdir/scmroot/golang-github-seancfoley-bintree'...
$ git fetch origin 5c340f26099f8f67c5f8f9145ad1f6d44c8b69cc:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-seancfoley-bintree
 * [new ref]         5c340f26099f8f67c5f8f9145ad1f6d44c8b69cc -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5c340f2 Initial import (#2183855).