$ git clone -n https://src.fedoraproject.org/rpms/rust-copydeps.git /var/lib/mock/f39-build-1521572-35848/root/chroot_tmpdir/scmroot/rust-copydeps
Cloning into '/var/lib/mock/f39-build-1521572-35848/root/chroot_tmpdir/scmroot/rust-copydeps'...
$ git fetch origin b77ebe79aefc19a905a16a41b7282b58c5eafc84:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-copydeps
 * [new ref]         b77ebe79aefc19a905a16a41b7282b58c5eafc84 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b77ebe7 Fix copy-paste error that broke installation of bash completions