$ git clone -n https://src.fedoraproject.org/rpms/stress-ng.git /var/lib/mock/f45-build-36512-706/root/chroot_tmpdir/scmroot/stress-ng
Cloning into '/var/lib/mock/f45-build-36512-706/root/chroot_tmpdir/scmroot/stress-ng'...
$ git fetch origin 470270395acb12f40d1a41310088ac3a1b043adf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/stress-ng
 * [new ref]         470270395acb12f40d1a41310088ac3a1b043adf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4702703 Update to 0.22.00. Fixes rhbz#2519498