$ git clone -n https://src.fedoraproject.org/rpms/rust-markup5ever.git /var/lib/mock/f39-build-1499832-34772/root/chroot_tmpdir/scmroot/rust-markup5ever
Cloning into '/var/lib/mock/f39-build-1499832-34772/root/chroot_tmpdir/scmroot/rust-markup5ever'...
$ git fetch origin dd018264649793d96720475dbbd5294011f3b880:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-markup5ever
 * [new ref]         dd018264649793d96720475dbbd5294011f3b880 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at dd01826 Bump phf dependencies from 0.10 to 0.11