$ git clone -n https://src.fedoraproject.org/rpms/xorg-x11-util-macros.git /var/lib/mock/f45-build-39026-731/root/chroot_tmpdir/scmroot/xorg-x11-util-macros
Cloning into '/var/lib/mock/f45-build-39026-731/root/chroot_tmpdir/scmroot/xorg-x11-util-macros'...
$ git fetch origin 965afb36f7b47177dc7f214602bd1dc67777a028:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xorg-x11-util-macros
 * [new ref]         965afb36f7b47177dc7f214602bd1dc67777a028 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 965afb3 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild