$ git clone -n https://src.fedoraproject.org/rpms/rust-schemafy_core.git /var/lib/mock/f45-build-44676-816/root/chroot_tmpdir/scmroot/rust-schemafy_core
Cloning into '/var/lib/mock/f45-build-44676-816/root/chroot_tmpdir/scmroot/rust-schemafy_core'...
$ git fetch origin 14c0d9015169212d33da1a33ef99bfa4719bc9d0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-schemafy_core
 * [new ref]         14c0d9015169212d33da1a33ef99bfa4719bc9d0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 14c0d90 Regenerate with rust2rpm v28