$ git clone -n https://src.fedoraproject.org/rpms/procps-ng.git /var/lib/mock/f45-build-28950-634/root/chroot_tmpdir/scmroot/procps-ng
Cloning into '/var/lib/mock/f45-build-28950-634/root/chroot_tmpdir/scmroot/procps-ng'...
$ git fetch origin 56cd47281d5f13b9dcd8e38e92aff65bdae15b49:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/procps-ng
 * [new ref]         56cd47281d5f13b9dcd8e38e92aff65bdae15b49 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 56cd472 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild