$ git clone -n https://src.fedoraproject.org/rpms/rust-keyframe_derive.git /var/lib/mock/f45-build-42760-796/root/chroot_tmpdir/scmroot/rust-keyframe_derive
Cloning into '/var/lib/mock/f45-build-42760-796/root/chroot_tmpdir/scmroot/rust-keyframe_derive'...
$ git fetch origin 5735ce3ce64edd757f5e1efd7876fd266b88f50f:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-keyframe_derive
 * [new ref]         5735ce3ce64edd757f5e1efd7876fd266b88f50f -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 5735ce3 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild