$ git clone -n https://src.fedoraproject.org/rpms/xfwm4-themes.git /var/lib/mock/f45-build-38897-730/root/chroot_tmpdir/scmroot/xfwm4-themes
Cloning into '/var/lib/mock/f45-build-38897-730/root/chroot_tmpdir/scmroot/xfwm4-themes'...
$ git fetch origin 9f11676c5eab6bfc395a8813a268712dd937ac1b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/xfwm4-themes
 * [new ref]         9f11676c5eab6bfc395a8813a268712dd937ac1b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9f11676 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild