$ git clone -n https://src.fedoraproject.org/rpms/golang-github-libgit2-git2go.git /var/lib/mock/f40-build-2669052-67246/root/chroot_tmpdir/scmroot/golang-github-libgit2-git2go
Cloning into '/var/lib/mock/f40-build-2669052-67246/root/chroot_tmpdir/scmroot/golang-github-libgit2-git2go'...
$ git fetch origin dc6c90f9f9c498a271a3041d2217be37ff09688b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/golang-github-libgit2-git2go
 * [new ref]         dc6c90f9f9c498a271a3041d2217be37ff09688b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dc6c90f Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild