$ git clone -n https://src.fedoraproject.org/rpms/luminance-hdr.git /var/lib/mock/f40-build-746399-112597/root/chroot_tmpdir/scmroot/luminance-hdr
Cloning into '/var/lib/mock/f40-build-746399-112597/root/chroot_tmpdir/scmroot/luminance-hdr'...
$ git reset --hard de28fe6e604863390253f8f2a1789cf1b2750569
HEAD is now at de28fe6 Fix build with exiv2-0.28.0