$ git clone -n https://src.fedoraproject.org/rpms/rust-assert-eq-float.git /var/lib/mock/f45-build-40178-769/root/chroot_tmpdir/scmroot/rust-assert-eq-float
Cloning into '/var/lib/mock/f45-build-40178-769/root/chroot_tmpdir/scmroot/rust-assert-eq-float'...
$ git fetch origin 21cffd0b573d4291f6e5bce4eb5990fdda12f82b:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-assert-eq-float
 * [new ref]         21cffd0b573d4291f6e5bce4eb5990fdda12f82b -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 21cffd0 Rebuilt for https://fedoraproject.org/wiki/Fedora_45_Mass_Rebuild