$ git clone -n https://src.fedoraproject.org/rpms/flashrom.git /var/lib/mock/f40-build-757275-119337/root/chroot_tmpdir/scmroot/flashrom
Cloning into '/var/lib/mock/f40-build-757275-119337/root/chroot_tmpdir/scmroot/flashrom'...
$ git fetch origin 9e406c312f52a935868f491a54f8d47f63e6be68:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/flashrom
 * [new ref]         9e406c312f52a935868f491a54f8d47f63e6be68 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9e406c3 Uploaded signature