$ git clone -n https://src.fedoraproject.org/rpms/rubygem-poppler.git /var/lib/mock/f37-build-side-32-misc-devel-190001-12544/root/chroot_tmpdir/scmroot/rubygem-poppler
Cloning into '/var/lib/mock/f37-build-side-32-misc-devel-190001-12544/root/chroot_tmpdir/scmroot/rubygem-poppler'...
$ git reset --hard 2e10dd38f94821142a5ed8bb6e78ef2ad28f5373
HEAD is now at 2e10dd3 4.0.5