$ git clone -n https://src.fedoraproject.org/rpms/glances.git /var/lib/mock/f38-build-side-42-init-devel-837976-28399/root/chroot_tmpdir/scmroot/glances
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-837976-28399/root/chroot_tmpdir/scmroot/glances'...
$ git fetch origin 90d3a215b2f30c48ee7851ddd493a26875dca5d9:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/glances
 * [new ref]         90d3a215b2f30c48ee7851ddd493a26875dca5d9 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 90d3a21 RHBZ #2162627