$ git clone -n https://src.fedoraproject.org/rpms/rust-pangocairo.git /var/lib/mock/f40-build-2653173-66899/root/chroot_tmpdir/scmroot/rust-pangocairo
Cloning into '/var/lib/mock/f40-build-2653173-66899/root/chroot_tmpdir/scmroot/rust-pangocairo'...
$ git fetch origin 2cb109e2382d059f04e1a97520952a07420751a0:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-pangocairo
 * [new ref]         2cb109e2382d059f04e1a97520952a07420751a0 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 2cb109e Update to version 0.19.2; Fixes RHBZ#2262605