$ git clone -n https://src.fedoraproject.org/rpms/deepin-pdfium.git /var/lib/mock/f42-build-861905-170476/root/chroot_tmpdir/scmroot/deepin-pdfium
Cloning into '/var/lib/mock/f42-build-861905-170476/root/chroot_tmpdir/scmroot/deepin-pdfium'...
$ git fetch origin 8686a51556b07bd5ca05a01be24cc05fecaf317b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/deepin-pdfium
 * [new ref]         8686a51556b07bd5ca05a01be24cc05fecaf317b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 8686a51 Rebuild for ICU 76