$ git clone -n https://src.fedoraproject.org/rpms/kexec-tools.git /var/lib/mock/f45-build-14735-463/root/chroot_tmpdir/scmroot/kexec-tools
Cloning into '/var/lib/mock/f45-build-14735-463/root/chroot_tmpdir/scmroot/kexec-tools'...
$ git fetch origin aa036a08f0982ea3148d73582ba781f773480453:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kexec-tools
 * [new ref]         aa036a08f0982ea3148d73582ba781f773480453 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at aa036a0 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild