$ git clone -n https://src.fedoraproject.org/rpms/rubygem-cairo.git /var/lib/mock/f37-build-633696-69380/root/chroot_tmpdir/scmroot/rubygem-cairo
Cloning into '/var/lib/mock/f37-build-633696-69380/root/chroot_tmpdir/scmroot/rubygem-cairo'...
$ git reset --hard ac36a5f93a0e48565adf9ab93fb059d59ce976c3
HEAD is now at ac36a5f 1.17.7