$ git clone -n https://github.com/fedora-riscv/libxc.git /var/lib/mock/f39-build-2398371-60547/root/chroot_tmpdir/scmroot/libxc
Cloning into '/var/lib/mock/f39-build-2398371-60547/root/chroot_tmpdir/scmroot/libxc'...
$ git fetch origin bc130ddff2ee01ec3c2ad47a0ad433388aa82a21:KOJI_FETCH_HEAD
From https://github.com/fedora-riscv/libxc
 * [new ref]         bc130ddff2ee01ec3c2ad47a0ad433388aa82a21 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at bc130dd Rebuild for f39