$ git clone -n https://src.fedoraproject.org/rpms/rust-gix-diff.git /var/lib/mock/f41-build-700584-12889/root/chroot_tmpdir/scmroot/rust-gix-diff
Cloning into '/var/lib/mock/f41-build-700584-12889/root/chroot_tmpdir/scmroot/rust-gix-diff'...
$ git fetch origin 52ca365f7ab5c538211fe82b9e300bcac2bb821f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-gix-diff
 * [new ref]         52ca365f7ab5c538211fe82b9e300bcac2bb821f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 52ca365 Update to version 0.42.0 (rhbz#2253266)