$ git clone -n https://src.fedoraproject.org/rpms/rust-pkcs5.git /var/lib/mock/f38-build-side-43-rust-devel-1410501-31420/root/chroot_tmpdir/scmroot/rust-pkcs5
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1410501-31420/root/chroot_tmpdir/scmroot/rust-pkcs5'...
$ git fetch origin cf93f4d26c2bfaef365aa0bcad33fb89bfe7f3cf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-pkcs5
 * [new ref]         cf93f4d26c2bfaef365aa0bcad33fb89bfe7f3cf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cf93f4d Update to version 0.7.1; Fixes RHBZ#2082968