$ git clone -n https://src.fedoraproject.org/rpms/rust-pango.git /var/lib/mock/f40-build-2653171-66899/root/chroot_tmpdir/scmroot/rust-pango
Cloning into '/var/lib/mock/f40-build-2653171-66899/root/chroot_tmpdir/scmroot/rust-pango'...
$ git fetch origin 4b5d396a0ac69b98fc3f0153554b8711a391386e:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-pango
 * [new ref]         4b5d396a0ac69b98fc3f0153554b8711a391386e -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 4b5d396 Update to version 0.19.3; Fixes RHBZ#2262603