$ git clone -n https://src.fedoraproject.org/rpms/rust-servo-fontconfig-sys.git /var/lib/mock/f39-build-1526705-36091/root/chroot_tmpdir/scmroot/rust-servo-fontconfig-sys
Cloning into '/var/lib/mock/f39-build-1526705-36091/root/chroot_tmpdir/scmroot/rust-servo-fontconfig-sys'...
$ git fetch origin 1c29e966192af7fda8f8a79082b65114a70ede80:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-servo-fontconfig-sys
 * [new ref]         1c29e966192af7fda8f8a79082b65114a70ede80 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1c29e96 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild