$ git clone -n https://src.fedoraproject.org/rpms/rust-openat-ext.git /var/lib/mock/f41-build-side-1-3134864-39763/root/chroot_tmpdir/scmroot/rust-openat-ext
Cloning into '/var/lib/mock/f41-build-side-1-3134864-39763/root/chroot_tmpdir/scmroot/rust-openat-ext'...
$ git fetch origin ea376b368d977464d76f7fe3a95e5564fadf2f4a:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-openat-ext
 * [new ref]         ea376b368d977464d76f7fe3a95e5564fadf2f4a -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at ea376b3 unused leaf package for more than two release cycles