$ git clone -n https://src.fedoraproject.org/rpms/j4-dmenu-desktop.git /var/lib/mock/f38-build-side-42-init-devel-858406-28427/root/chroot_tmpdir/scmroot/j4-dmenu-desktop
Cloning into '/var/lib/mock/f38-build-side-42-init-devel-858406-28427/root/chroot_tmpdir/scmroot/j4-dmenu-desktop'...
$ git fetch origin eaf6d4189e63b09d90e331c69f6cdff0b2d2c1ab:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/j4-dmenu-desktop
 * [new ref]         eaf6d4189e63b09d90e331c69f6cdff0b2d2c1ab -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at eaf6d41 Rebuilt for https://fedoraproject.org/wiki/Fedora_38_Mass_Rebuild