$ git clone -n https://src.fedoraproject.org/rpms/blktrace.git /var/lib/mock/f40-build-2208807-52141/root/chroot_tmpdir/scmroot/blktrace
Cloning into '/var/lib/mock/f40-build-2208807-52141/root/chroot_tmpdir/scmroot/blktrace'...
$ git fetch origin 493c07c07d7883d2f4e7ece2b246c3ac0f4e87fd:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/blktrace
 * [new ref]         493c07c07d7883d2f4e7ece2b246c3ac0f4e87fd -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 493c07c Convert License tag to SPDX format