$ git clone -n https://src.fedoraproject.org/rpms/asmjit.git /var/lib/mock/f40-build-2260748-54418/root/chroot_tmpdir/scmroot/asmjit
Cloning into '/var/lib/mock/f40-build-2260748-54418/root/chroot_tmpdir/scmroot/asmjit'...
$ git fetch origin c242fd82ee0b10f2c96ba9f63a05a64176cd5c28:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/asmjit
 * [new ref]         c242fd82ee0b10f2c96ba9f63a05a64176cd5c28 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at c242fd8 1st release