$ git clone -n https://src.fedoraproject.org/rpms/copr-selinux.git /var/lib/mock/f42-build-side-1-3502167-45977/root/chroot_tmpdir/scmroot/copr-selinux
Cloning into '/var/lib/mock/f42-build-side-1-3502167-45977/root/chroot_tmpdir/scmroot/copr-selinux'...
$ git fetch origin cc42feb92bd340a327ebb2b76e05bfb927512d43:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/copr-selinux
 * [new ref]         cc42feb92bd340a327ebb2b76e05bfb927512d43 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at cc42feb Update copr-selinux to 1.56-1