$ git clone -n https://src.fedoraproject.org/rpms/rust-bugreport.git /var/lib/mock/f42-build-3270357-41264/root/chroot_tmpdir/scmroot/rust-bugreport
Cloning into '/var/lib/mock/f42-build-3270357-41264/root/chroot_tmpdir/scmroot/rust-bugreport'...
$ git fetch origin 9fac75a9d8c7b219e2472eef9c90d9e13f585faf:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-bugreport
 * [new ref]         9fac75a9d8c7b219e2472eef9c90d9e13f585faf -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 9fac75a Rebuilt for https://fedoraproject.org/wiki/Fedora_42_Mass_Rebuild