$ git clone -n http://fedora.riscv.rocks:3000/rpms/gcc.git /var/lib/mock/f40-build-775866-128469/root/chroot_tmpdir/scmroot/gcc
Cloning into '/var/lib/mock/f40-build-775866-128469/root/chroot_tmpdir/scmroot/gcc'...
$ git fetch origin f94c37ed140f194f4543c3ced6ec5c18b4cd9a03:KOJI_FETCH_HEAD
From http://fedora.riscv.rocks:3000/rpms/gcc
 * [new ref]         f94c37ed140f194f4543c3ced6ec5c18b4cd9a03 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at f94c37e Bump