$ git clone -n https://src.fedoraproject.org/rpms/rust-procfs0.9.git /var/lib/mock/f41-build-725229-13118/root/chroot_tmpdir/scmroot/rust-procfs0.9
Cloning into '/var/lib/mock/f41-build-725229-13118/root/chroot_tmpdir/scmroot/rust-procfs0.9'...
$ git fetch origin c7e93abbde67a513f42bfd03cac493138921b896:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-procfs0.9
 * [new ref]         c7e93abbde67a513f42bfd03cac493138921b896 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c7e93ab compat package no longer needed