$ git clone -n https://src.fedoraproject.org/rpms/j4-dmenu-desktop.git /var/lib/mock/f39-build-2338901-59618/root/chroot_tmpdir/scmroot/j4-dmenu-desktop
Cloning into '/var/lib/mock/f39-build-2338901-59618/root/chroot_tmpdir/scmroot/j4-dmenu-desktop'...
$ git fetch origin 804408f60c30975564f5342d3f5c6d549fe1d835:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/j4-dmenu-desktop
 * [new ref]         804408f60c30975564f5342d3f5c6d549fe1d835 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 804408f Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild