$ git clone -n https://src.fedoraproject.org/rpms/rust-md5-asm.git /var/lib/mock/f38-build-side-43-rust-devel-1416422-31457/root/chroot_tmpdir/scmroot/rust-md5-asm
Cloning into '/var/lib/mock/f38-build-side-43-rust-devel-1416422-31457/root/chroot_tmpdir/scmroot/rust-md5-asm'...
$ git fetch origin a8f8158b68a220f9ecb69755ad5e484b0c0baa29:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-md5-asm
 * [new ref]         a8f8158b68a220f9ecb69755ad5e484b0c0baa29 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at a8f8158 Initial import (#2223623)