$ git clone -n https://src.fedoraproject.org/rpms/uClibc.git /var/lib/mock/f40-build-804451-144525/root/chroot_tmpdir/scmroot/uClibc
Cloning into '/var/lib/mock/f40-build-804451-144525/root/chroot_tmpdir/scmroot/uClibc'...
$ git fetch origin b74ad50bb78a72bdceef8e3ac8931d8b64731a21:KOJI_FETCH_HEAD
From https://src.fedoraproject.org/rpms/uClibc
 * [new ref]         b74ad50bb78a72bdceef8e3ac8931d8b64731a21 -> KOJI_FETCH_HEAD
$ git reset --hard KOJI_FETCH_HEAD
HEAD is now at b74ad50 Rebuilt for https://fedoraproject.org/wiki/Fedora_40_Mass_Rebuild