$ git clone -n http://fedora.riscv.rocks:3000/rpms/webkitgtk.git /var/lib/mock/f42-build-861879-170470/root/chroot_tmpdir/scmroot/webkitgtk
Cloning into '/var/lib/mock/f42-build-861879-170470/root/chroot_tmpdir/scmroot/webkitgtk'...
$ git fetch origin 8e54a174153bb370f454b569d341ee88f080569d:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/webkitgtk
 * [new ref]         8e54a174153bb370f454b569d341ee88f080569d -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8e54a17 Try reverse