$ git clone -n https://src.fedoraproject.org/rpms/kde-gtk-config.git /var/lib/mock/f40-build-2370931-60394/root/chroot_tmpdir/scmroot/kde-gtk-config
Cloning into '/var/lib/mock/f40-build-2370931-60394/root/chroot_tmpdir/scmroot/kde-gtk-config'...
$ git fetch origin 399f1053eb29e3ab26b03bdc12e8be7b20f6fd59:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/kde-gtk-config
 * [new ref]         399f1053eb29e3ab26b03bdc12e8be7b20f6fd59 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 399f105 5.93.0