$ git clone -n https://src.fedoraproject.org/rpms/rust-rand_chacha0.2.git /var/lib/mock/f39-build-1494376-34542/root/chroot_tmpdir/scmroot/rust-rand_chacha0.2
Cloning into '/var/lib/mock/f39-build-1494376-34542/root/chroot_tmpdir/scmroot/rust-rand_chacha0.2'...
$ git fetch origin 1152bd25779ac135e300e98f08bea0b8c9e467f2:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/rust-rand_chacha0.2
 * [new ref]         1152bd25779ac135e300e98f08bea0b8c9e467f2 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at 1152bd2 Rebuilt for https://fedoraproject.org/wiki/Fedora_39_Mass_Rebuild