$ git clone -n https://src.fedoraproject.org/rpms/rust-unidecode.git /var/lib/mock/f42-build-3251778-41222/root/chroot_tmpdir/scmroot/rust-unidecode
Cloning into '/var/lib/mock/f42-build-3251778-41222/root/chroot_tmpdir/scmroot/rust-unidecode'...
$ git fetch origin 1e5f6a3812cfacff007ce253e699bc860233d546:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-unidecode
 * [new ref]         1e5f6a3812cfacff007ce253e699bc860233d546 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1e5f6a3 unused leaf package for more than two release cycles