$ git clone -n https://src.fedoraproject.org/rpms/doublecmd.git /var/lib/mock/f39-build-2436902-60811/root/chroot_tmpdir/scmroot/doublecmd
Cloning into '/var/lib/mock/f39-build-2436902-60811/root/chroot_tmpdir/scmroot/doublecmd'...
$ git fetch origin 57cf9e75ba48e60ff4c4785765770f55590efdd5:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/doublecmd
 * [new ref]         57cf9e75ba48e60ff4c4785765770f55590efdd5 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 57cf9e7 Update to 1.1.10.