$ git clone -n https://src.fedoraproject.org/rpms/rust-ironrdp-core.git /var/lib/mock/f42-build-3267399-41262/root/chroot_tmpdir/scmroot/rust-ironrdp-core
Cloning into '/var/lib/mock/f42-build-3267399-41262/root/chroot_tmpdir/scmroot/rust-ironrdp-core'...
$ git fetch origin c59803c6df910ad3b87a739ae7df314040dcf930:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-ironrdp-core
 * [new ref]         c59803c6df910ad3b87a739ae7df314040dcf930 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c59803c Initial packaging, fixes rhbz#2329127