$ git clone -n https://src.fedoraproject.org/rpms/rust-leb128.git /var/lib/mock/f41-build-side-1-3134842-39762/root/chroot_tmpdir/scmroot/rust-leb128
Cloning into '/var/lib/mock/f41-build-side-1-3134842-39762/root/chroot_tmpdir/scmroot/rust-leb128'...
$ git fetch origin c320db3f987079ae898a9704bfa60e490ee9c9c1:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-leb128
 * [new ref]         c320db3f987079ae898a9704bfa60e490ee9c9c1 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c320db3 Unretirement request: pagure.io/releng/issue/12412 Revert "no longer needed"